Even though it wasn’t successful, this Kickstarter told us an important thing. You guys want this harmony app to exist! So far we have successfully built the iPhone version with the android version to come in a few weeks!
The harmony app features a menu where you can select a song. Then you can mute and un-mute whatever parts you want to hear. It shows you the words, and all you have to do it sing along. Perfect for teaching yourself and others the art of singing in harmony very quickly and easily.
We hope you find this to be a useful tool both for learning and teaching how to sing harmony. Enjoy!